EVAL-L9942

The EVAL-L9942 is the Evaluation Board designed to provide the user a platform to evaluate the device L9942.

The L9942 is a motor driver for bipolar stepper motors with micro-stepping and programmable current profile look-up-table to allow a flexible adaptation of the motor characteristics and intended operating conditions.

Different current profiles can be chosen depending on target criteria: audible noise, vibrations, rotation speed or torque.

The decay mode used in PWM-current control circuit can be programmed to have slow, fast, mixed and auto-decay.

The programmable stall detection is useful to avoid running the motor too long time in stall position minimizing the noise.

The EVAL-L9942 board provides all the inputs and outputs capabilities necessary to drive correctly a bipolar stepper motor and also to monitoring diagnostic functionalities.

The board can be connected to the discovery boards developed for the SPC56 microcontroller.

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Data Brief

Key Features

Input signal connector compatible with the SPC56 Discovery boards. Possibility to connect the board to further microcontroller discovery or control boards by a simple adaptor.

Two output terminal blocks.

Wide supply voltage range (VBatt): 7 V ÷ 20 V.

2 LEDs for monitoring VBattand EN signal.

Device controlled and programmed via SPI.

L9942 diagnostic functions via SPI.

Test points to monitoring both input signals (SPI, PWM, EN, StepClock) and the four outputs (out power stage).

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